The current population is 12,529 people and the area is 606 sq. mi.
The county seat is displayed in oblique & bold face.
Towns that have more than 4 opening/close dates or are current have links to complete information.
Post Office Service
Adolph
1903-1904
Argyle
1904-Present
Aud
1889-1954
Babbtown
1878-1906
Bailey’s Creek
1844-1907
Belle
1878-1895, 1900-1901
Boaz
1853-1859
Boeger’s Store
1871-1897
Boegers
1897
Bonnot’s
1857-1869
Bonnot’s Mill
1892-Present
Byron
1860, 1864-1920
Byron
1864-1920
Castle Rock
1856-1885
Chamois
1856-Present
Cooper Hill
1893-1957
Cooper’s Hill
1860-1893
Crook
1903-1920
Dauphine
1869-1892
Deer
1901-1932
Dingley
1907-1909
Edwards Mill
1867-1869
Engelbert
1886-1888
Feuersville
1879-1916
Flora
1881-1898
Folk
1905-1964
Frankberg
1888-1892
Frankenstein
1893-1921
Fredericksburg
1849-1893
Freeburg
1893-Present
Freedom
1889-1957
Gallaway Station
1864-1876
Gascondy
1907-1942
Goodman’s Mills
1849-1850
Hope
1897-1974
Isabelle Station
1869
Isbell Station
1889-1941
Jersey
1886-1903
Judge
1914-1922
Kiddridge
1873-1881
Koeltztown
1862-Present
Post Office Service
Koenig
1892-1920
Krohn
1907-1910
Lane
1903-1920
Lane’s Prairie
1842-1851
Leboeuf
1886-1920
Linn
1844-Present
Linnwood
1863-1889
Lisle
1842-1860
Loose Creek
1849-Present
Luystown
1881-1921
Marais
1848-1855
Mc Knight
1880-1889
Medora
1858-1893
Meta
1903-Present
Mint Hill
1870-1909, 1926-1954
New Providence
1870-1872
Oil Spring
1866-1867
Oshawa
1867-1874
Owens Mills
1876-1887, 1889-1922
Pay Down
1850, 1855-1856
Pea Vine
1854-1857
Peachland
1870-1886
Phelps
1854-1855
Potts
1905-1920
Prairie Creek
1860-1865
Prairie Valley
1860
Prior’s Mill
1857-1861
Quebec
1887-1889
Rich Fountain
1854-1972
Rock Castle
1842-1844
Ryors
1905-1934
Saint Ausert
1893-1935
Sand Rock
1885-1886, 1889-1890
Steuber
1902
Surprise
1879-1883
Triumph
1905-1916
Useful
1881-1889, 1906-1918
Vosholl
1900-1923
Wallaer’s Landing
1857-1860
Welcome
1880-1917
Westphalia
1848-Present
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There are 82 post offices listed for Osage County.
Post office information from “Missouri Post Offices 1804-1981” ©1982 - Robert G. Schultz. Used with permission of author. Additional info on zip codes, markings and distances come from various members of MOPOHISSOC.
All post offices for Osage County have been added to the database.
Note: Researchers only listed for towns that have specific researchers separate from the overall county.
Remember, this site is primarily concerned with POSTAL history and makes no claims regarding genealogical research.
List updated: 27 Nov 2009 23:28
Direct inquiries to
This page, and all contents are Copyright © MCMXCIX-MMIX by
Missouri Postal History Society, St. Louis, Missouri.